Mark66 over at the old Delphi forums posted some previews of some transitional seasons he's been working on. Up until now there's been hard-defined seasons. For instance, winter always has snow, even though it's not like that in real life!

So he's remedied the situation! Check it out!

They're still works-in-progress, which means no download link for now (boo!). But once they're up I'll let you know as soon as I find out!